If you dream about a tube amplifier with the legendary directly heated 2A3 triode, the Pure Dynamics 2A3 amplifier will be your favorite. A very special amplifier. We combine the legendary qualities of a triode -- namely natural, expressive mids, warmth, musicality -- with unexpected vividness, brilliant highs, and dynamics bass.

Selected direct heated 2A3 power triode in a push-pull circuit with or without negative feedback. Power: 10W per channel. Two 6SL7GT are used for preamplification and phase splitting.

The high-end output transformer with two separated chambers was especially developed for this amplifier. Best materials, a very large core for this output power, and the coil technique guarantee execptional bandwidth: 10Hz-60kHz (@-3db) without negative feedback!

Driver and power tubes are directly coupled, providing bandwidth and stable bias for the power tube even when grid current comes into play at full power. Separated stabilized but not regulated power supplies for all high-voltage supplies. Mundorf tin-foil capacitors for signal coupling. Optimized transformer placement. Non-magnetic stainless steel housing.

High-End made in Austria.

[Translate to English:] Die Bauanleitung umfasst Schaltpläne, Verdrahtungspläne, Fotos und Bauteillisten zum Zusammenbau einer 2A3-Endstufe. Die aktuelle Version ist 2.6, der Umfang ist 39 Seiten.

Price list:

price list in german 2010-01

 

Contact us:

Dipl.-Ing. Georg RUPPERT
ruppert(at)puredynamics.com
tel: +43 650 5336811
fax: +43 3182 219115
skype: gruppert

"... The preamp and 2a3 power amp combination has given my system air between each individual instrument. It is as if a haze has been removed from around all the various musicians. It is has if the system has new breath of life..."  mehr

"...Abschließend kann ich sagen, dass ich mit der Entscheidung für diesen Verstärker sehr zufrieden bin. Einerseits hat mir der Zusammenbau viel Freude bereitet und anderseits habe ich nun mit der 2A3 von Pure Dynamics einen tollen Amp, den ich jedem, der mit dem Gedanken des Hörens über Trioden spielt, wärmstens empfehlen kann." mehr